The utility model belongs to the technical field of power distribution equipment. The multifunctional capacitance compensation cabinet comprises a cabinet body, bottom plate, the bottom of the bottomplate is fixedly connected with four supporting legs which are distributed in a rectangular shape. The bottoms of the supporting legs are fixedly connected with a base. The top of the bottom plate isfixedly connected with a capacitance compensation cabinet body. One side of the capacitance compensation cabinet body is provided with a cabinet door. The interior of the capacitance compensation cabinet body is fixedly connected with two sliding rods which are symmetrically arranged. a plurality of pairs of sliding blocks sleeve the sliding rod in a sliding manner; the opposite sides of the two sliding blocks in the same pair are fixedly connected through a mounting rod; according to the utility model, through the arrangement of the driving motor, the fan blades and the filter screen, air circulation in the capacitance compensation cabinet is more uniform, the ventilation effect is better, and internal electrical elements are prevented from being overheated, affecting the service life ofthe electrical elements and causing safety accidents.